Machining grinding machine

Abstract

The invention relates to a machining grinding machine. The machining grinding machine comprises a machine body, a first hydrostatic guideway, a second hydrostatic guideway, a grinding wheel machining turret, a workpiece headstock component and a workpiece tailstock component. The first hydrostatic guideway is arranged on the surface of the lathe bed, a first feeding sliding block is movably connected to the first hydrostatic guideway, the second hydrostatic guideway is arranged on the surface of the lathe bed, and a second feeding sliding block is movably connected to the second hydrostatic guideway. The grinding wheel machining turret is arranged on the first feeding sliding block and used for machining a workpiece. And the workpiece headstock component is arranged on the second feeding sliding block, is opposite to the workpiece tailstock component and is used for tightly jacking the workpiece on the workpiece headstock component. The first hydrostatic guideway and the second hydrostatic guideway adopt a hydrostatic pressure technology, slide blocks are supported by a pressure oil film to move, non-contact sliding is realized, and the friction force approaches zero. Large-area oil film contact of the static pressure guide rail provides excellent bearing rigidity, vibration generated in the grinding process can be effectively absorbed, and the overall machining precision is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of precision grinding machine equipment, in particular to a machining grinding machine. BACKGROUND

[0002] In the field of precision grinding machining, the precision stability of traditional universal tool machining grinding machines has always been the key bottleneck restricting their application in high-end part machining. This precision instability is mainly due to the inherent defects in the core structure design, which is embodied in the following aspects: the grinding head spindle and the workpiece headstock of traditional universal tool machining grinding machines generally adopt mechanical transmission methods, such as belt transmission or gear box transmission. Such transmission structures are prone to vibration during operation due to the meshing gap between components, elastic deformation of the belt, etc. This vibration will be directly transmitted to the contact area between the grinding wheel and the workpiece, resulting in fluctuation of the cutting force during grinding, and further causing uneven workpiece surface quality and dimensional accuracy deviation, ultimately making it difficult to maintain stable grinding precision. The feed system is another important factor affecting precision stability. The feed system of traditional universal tool machining grinding machines mostly adopts the structure of hydraulic cylinder pushing, mechanical screw or servo motor cooperating with ball screw. Among them, the hydraulic cylinder pushing method has the problem of response lag caused by the compressibility of hydraulic oil, while the mechanical screw and ball screw will produce gap due to the wear of the thread pair after long-term use. This gap will cause the actual value of the feed amount to deviate from the theoretical value, and as the use time prolongs, the wear will intensify, making the deviation more and more obvious, ultimately causing continuous decline of machining precision. The design of bearing and guiding components also affects the precision stability. The spindle and feed guide of traditional universal tool machining grinding machines mostly adopt high-precision rolling bearings and sliding guides. The point contact between the rolling elements and the rings of the rolling bearing is prone to local stress concentration when running at high speed, resulting in vibration and heat, affecting the rotation precision; the sliding guide directly contacts and rubs due to metal, not only has a large friction coefficient, but also will lose the precision of the guide surface due to wear after long-term use, making the straightness and stability of the feed motion decline, further exacerbating the fluctuation of machining precision.

[0003] Therefore, in view of the above problems of traditional universal tool machining grinding machines with unstable precision, it is necessary to design a universal tool machining grinding machine with innovative design in transmission, feed, bearing, guiding and foundation support, etc., to realize long-term stability of high-precision machining. SUMMARY

[0004] Therefore, in view of the above problems of traditional universal tool machining grinding machines with unstable precision, it is necessary to design a universal tool machining grinding machine with innovative design in transmission, feed, bearing, guiding and foundation support, etc., to realize long-term stability of high-precision machining.

[0005] A machining grinding machine, comprising:

[0006] a bed;

[0007] The first static pressure guide rail is arranged on the surface of the lathe bed, and the first feeding slide block is movably connected on the first static pressure guide rail.

[0008] The second static pressure guide rail is arranged on the surface of the lathe bed, and the second feeding slide block is movably connected on the second static pressure guide rail.

[0009] The grinding wheel processing turret is arranged on the first feeding slide block, and is used for processing the workpiece.

[0010] The workpiece headstock component is arranged on the second feeding slide block, and is used for clamping and rotating the workpiece.

[0011] The workpiece tailstock component is arranged on the second feeding slide block, and is arranged opposite to the workpiece tailstock component, and is used for tightly clamping the workpiece on the workpiece headstock component.

[0012] In one embodiment, the workpiece headstock component comprises:

[0013] The headstock mounting plate is fixed on the first feeding slide block.

[0014] The headstock box body is fixed on the headstock mounting plate.

[0015] The mandrel is arranged in the interior of the headstock box body.

[0016] The static pressure bearing is arranged in the interior of the headstock box body, and is sleeved on the outside of the mandrel.

[0017] The torque motor is arranged in the interior of the headstock box body, and the driving end of the torque motor is connected with the mandrel.

[0018] The high-precision encoder is arranged in the interior of the headstock box body, and is connected with the torque motor.

[0019] The clamping chuck is connected with the end of the mandrel, and is partially arranged in the interior of the headstock box body; the clamping end of the clamping chuck is arranged on the outside of the headstock box body.

[0020] In one embodiment, the workpiece tailstock component comprises a handle mechanism, a tailstock body, a tailstock center and a center moving mechanism.

[0021] The tailstock body is arranged on the second feeding slide block, and the interior of the tailstock body is provided with a matching cavity; the center moving mechanism comprises a matching part and a center assembly part.

[0022] The handle mechanism comprises a driving end, and the driving end of the handle mechanism is arranged in the matching cavity.

[0023] The matching part of the center moving mechanism is arranged in the matching cavity.

[0024] The tailstock center is fixed on the center assembly part, and the driving end of the handle mechanism can push the matching part of the center moving mechanism, so that the center assembly part drives the tailstock center to extend to the outside of the tailstock body.

[0025] In one of the embodiments, the workpiece tailstock component further comprises a cylinder mechanism cooperating with the tailstock top pin moving mechanism;

[0026] The tailstock top pin moving mechanism comprises a tailstock top pin, a tailstock sleeve, a cooperating baffle, a top pin assembly and a reset spring;

[0027] The tailstock top pin penetrates through the cooperating cavity, the tailstock sleeve is sleeved on the outside of the tailstock top pin, and the cooperating baffle is located in the cooperating cavity and connected with the tailstock sleeve;

[0028] The top pin assembly is assembled on the outside of the tailstock body, the inside of the top pin assembly is provided with a top pin channel, and the tailstock top pin is partially arranged in the top pin channel;

[0029] The inside of the top pin channel is provided with a first stepped portion, the inside of the tailstock sleeve is provided with a second stepped portion, the reset spring is sleeved on the outside of the tailstock top pin, and the two ends of the reset spring abut against the first stepped portion and the second stepped portion respectively;

[0030] The cylinder mechanism comprises a piston rod, a connecting block and a piston chamber; the piston chamber is assembled on the outside of the tailstock body, the inside of the piston chamber is provided with an oil chamber, and the oil chamber is provided with a piston port, a first oil port and a second oil port;

[0031] The piston rod is partially arranged in the cooperating cavity, one end of the piston rod penetrates into the oil chamber from the piston port, the end of the piston rod is provided with a piston baffle, and the piston baffle divides the oil chamber into a first chamber and a second chamber; the first oil port is in communication with the first chamber, and the second oil port is in communication with the second chamber;

[0032] The connecting block is arranged in the cooperating cavity and connected with the piston rod and the cooperating baffle simultaneously.

[0033] In one of the embodiments, the workpiece tailstock component further comprises a tailstock fine adjustment mechanism arranged in the inside of the tailstock body, the tailstock body is divided into a first part and a second part by the tailstock fine adjustment mechanism, and an adjustment gap is formed between the first part and the second part; the handle mechanism, the tailstock top pin and the tailstock top pin moving mechanism are arranged on the first part;

[0034] The tailstock fine adjustment mechanism comprises a rotating differential cylinder, a centralizing screw, a first threaded inner cone, a second threaded inner cone and a tensioning sleeve assembly;

[0035] The first threaded inner cone and the second threaded inner cone are threadedly connected on the centralizing screw, and the tensioning sleeve assembly is sleeved on the outside of the first threaded inner cone and the second threaded inner cone;

[0036] The outer side of the tensioning sleeve simultaneously contacts the surfaces of the first part and the second part forming the adjusting gap, and the rotary differential cylinder is arranged on the end of the tailstock body outside the adjusting screw, and the rotation of the adjusting screw can drive the first threaded inner cone and the second threaded inner cone to move towards each other or away from each other, so as to expand or shrink the outer side of the tensioning sleeve.

[0037] In one of the embodiments, the grinding wheel machining turret comprises an outer circle grinding mechanism, an inner circle grinding mechanism and a turret body; the turret body is arranged on the surface of the first feeding slide, the outer circle grinding mechanism and the inner circle grinding mechanism are arranged on the surface of the turret body, and the turret body can rotate along the axis direction on the surface of the first feeding slide.

[0038] In one of the embodiments, the first hydrostatic guide is arranged perpendicularly to the second hydrostatic guide; the first hydrostatic guide is provided with a first driving motor, and the movable end of the first driving motor is connected to the first feeding slide;

[0039] The second hydrostatic guide is provided with a second driving motor, and the movable end of the second driving motor is connected to the second feeding slide.

[0040] In one of the embodiments, the first hydrostatic guide is provided with a wear real-time compensation control system, which comprises a position monitoring mechanism and a control system; the control system is connected to the position monitoring mechanism and the first driving motor.

[0041] In one of the embodiments, the first hydrostatic guide is provided with a first grating, which is arranged on one side of the first hydrostatic guide along the length direction of the first hydrostatic guide;

[0042] The second hydrostatic guide is provided with a second grating, which is arranged on one side of the second hydrostatic guide along the length direction of the second hydrostatic guide.

[0043] In one of the embodiments, the bed body is made of marble.

[0044] The machining grinding machine comprises a bed body, a first hydrostatic guide, a second hydrostatic guide, a grinding wheel machining turret, a workpiece headstock component and a workpiece tailstock component. The first hydrostatic guide is arranged on the surface of the bed body, and the first feeding slide is movably connected to the first hydrostatic guide. The second hydrostatic guide is arranged on the surface of the bed body, and the second feeding slide is movably connected to the second hydrostatic guide. The grinding wheel machining turret is arranged on the first feeding slide and is used for machining the workpiece. The workpiece headstock component is arranged on the second feeding slide and is arranged opposite to the workpiece tailstock component, and is used for clamping the workpiece on the workpiece headstock component. The first hydrostatic guide and the second hydrostatic guide adopt the liquid hydrostatic technology, support the movement of the slide through the pressure oil film, realize the non-contact sliding, and the friction force tends to be zero. The large-area oil film contact of the hydrostatic guide provides excellent bearing stiffness, which can effectively absorb the vibration generated in the grinding process. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 A structural schematic diagram of a processing grinding machine provided by an embodiment of the present application.

[0046] Figure 2 A top view of a processing grinding machine provided by an embodiment of the present application.

[0047] Figure 3 An assembly schematic diagram of a first hydrostatic guideway and a second hydrostatic guideway provided by an embodiment of the present application.

[0048] Figure 4 A structural sectional view of a workpiece headstock component provided by an embodiment of the present application.

[0049] Figure 5 A back view schematic diagram of a workpiece tailstock component provided by an embodiment of the present application.

[0050] Figure 6 A sectional view of a cross section N-N. Figure 5 A sectional view of a cross section M-M.

[0051] Figure 7 A sectional view of a cross section N-N. Figure 5 A sectional view of a cross section M-M.

[0052] Figure 8 A longitudinal sectional view of a workpiece tailstock component provided by an embodiment of the present application.

[0053] Reference numerals:

[0054] 1000, bed body;

[0055] 2000, first hydrostatic guideway; 2001, first feed slide; 2002, first grating; 2003, first driving motor;

[0056] 3000, second hydrostatic guideway; 3001, second feed slide; 3002, second grating; 3003, second driving motor;

[0057] 4000, grinding wheel processing turret; 4001, turret body; 4002, external cylindrical grinding mechanism; 4003, internal cylindrical grinding mechanism;

[0058] 5000, workpiece headstock component; 5001, headstock mounting plate; 5002, headstock box body; 5003, mandrel; 5004, hydrostatic bearing; 5005, torque motor; 5006, high-precision encoder; 5007, clamping chuck;

[0059] 6000, workpiece tailstock component; 6001, handle mechanism; 6002, tailstock body; 6003, tailstock center; 6004, mating chamber; 6005, drive end; 6006, center rod; 6007, center sleeve; 6008, mating baffle; 6009, ejector rod assembly; 6010, return spring; 6011, ejector rod passage; 6012, first step portion; 6013, second step portion; 6014, piston rod; 6015, connecting block; 6016, piston chamber; 6017, oil chamber; 6018, first oil port; 6019, second oil port; 6020, piston baffle;

[0060] 6030, tailstock fine adjustment mechanism; 6031, rotating differential cylinder; 6032, adjusting screw; 6033, first threaded inner cone; 6034, second threaded inner cone; 6035, tension sleeve assembly;

[0061] 6040, first portion; 6050, second portion. DETAILED DESCRIPTION

[0062] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced in a variety of ways beyond the specific embodiments described herein without departing from the spirit of the present application, and it is intended that the present application cover all modifications and variations of this application within the scope of the appended claims.

[0063] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0064] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0065] In the present application, unless specifically defined otherwise, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0066] In the present application, unless specifically defined otherwise, if there are terms such as "mount", "connect", "connect", "fix", etc., these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and are not the only embodiment.

[0068] Referring to Figures 1-3 shown, Figure 1 the structure diagram of the machining grinding machine provided by the embodiment of the present application, Figure 2 the top view of the machining grinding machine provided by the embodiment of the present application, Figure 3 The first static pressure guide rail and the second static pressure guide rail provided by the embodiment of the present application are shown. The machining grinding machine includes a bed 1000, a first static pressure guide rail 2000, a second static pressure guide rail 3000, a grinding wheel machining turret 4000, a workpiece headstock component 5000 and a workpiece tailstock component 6000. The first static pressure guide rail 2000 is arranged on the surface of the bed 1000, and the first static pressure guide rail 2000 is movably connected with the first feed slide 2001. The second static pressure guide rail 3000 is arranged on the surface of the bed 1000, and the second static pressure guide rail 3000 is movably connected with the second feed slide 3001.

[0069] The first hydrostatic guide rail 2000 is fixedly arranged on the surface of the bed body 1000, and a non-contact support structure is formed by a pressure oil film. The first feeding slider 2001 is slidably connected to the first hydrostatic guide rail 2000 and can smoothly move along the extension direction of the first hydrostatic guide rail 2000. The grinding wheel machining turret 4000 is fixedly installed on the first feeding slider 2001. The grinding wheel machining turret 4000 is integrated with multiple different types of grinding wheels, and the corresponding grinding wheel can be switched according to the machining requirement, so as to perform grinding machining of multiple forms such as an external circle, an internal circle and a plane on a workpiece. The second hydrostatic guide rail 3000 is also fixedly arranged on the surface of the bed body 1000 and is arranged at a preset angle with the first hydrostatic guide rail 2000. The second hydrostatic guide rail 3000 also adopts a pressure oil film to realize non-contact support. The second feeding slider 3001 is slidably connected to the second hydrostatic guide rail 3000 and can smoothly move along the extension direction of the second hydrostatic guide rail 3000. The workpiece headstock component 5000 is fixedly installed on the second feeding slider 3001. The workpiece headstock component 5000 includes a driving spindle and a workpiece clamping structure, which is used to stably clamp a workpiece and rotate the workpiece around its axis by the driving spindle. The workpiece tailstock component 6000 is fixedly installed on the second feeding slider 3001 and is oppositely arranged with the workpiece headstock component 5000 along the workpiece axis direction. An extendable center is arranged at the end of the workpiece tailstock component 6000, which is used to tightly press the end of the workpiece away from the workpiece headstock component 5000, so as to realize axial positioning and radial stability of the workpiece in the machining process in cooperation with the workpiece headstock component 5000.

[0070] The stable foundation provided by the bed body 1000 ensures the positional accuracy of the installation of each component and lays a foundation for the overall machining accuracy. The first hydrostatic guide rail 2000 and the second hydrostatic guide rail 3000 adopt a pressure oil film support structure, so that the first feeding slider 2001 and the second feeding slider 3001 realize non-mechanical contact during movement, greatly reducing the movement friction resistance and wear. This not only ensures the stability and precision of the movement of the sliders, but also significantly prolongs the service life of the guide rails and the sliders. The grinding wheel machining turret 4000 is integrated with multiple grinding wheels and can be flexibly switched, so that the equipment can adapt to the requirements of different workpieces and different machining processes, improving the versatility and machining efficiency of the equipment. The workpiece headstock component 5000 and the workpiece tailstock component 6000 are jointly arranged on the second feeding slider 3001 and can move synchronously with the second feeding slider 3001, ensuring that the workpiece always maintains a stable clamping state and axial consistency during the adjustment of the position, avoiding loosening of the clamping or axial deviation caused by adjustment of the position of the workpiece, and improving the stability of the machining process and the machining accuracy of the workpiece. The first feeding slider 2001 and the second feeding slider 3001 independently move along the respective hydrostatic guide rails, so that the relative position adjustment between the grinding wheel machining turret 4000 and the workpiece is more flexible and accurate, which can meet the grinding requirements of workpieces with complex shapes, and further improves the machining adaptability and machining quality of the equipment.

[0071] In some embodiments of the present application, reference is made to the drawings attached hereto and to the accompanying descriptive text Figure 4 , Figure 4 is a structural sectional view of a workpiece headstock component provided in embodiments of the present application.

[0072] The workpiece headstock component 5000 shown includes a headstock mounting plate 5001, a headstock box 5002, a mandrel 5003, a hydrostatic bearing 5004, a torque motor 5005, a high-precision encoder 5006, and a clamping chuck 5007.

[0073] The headstock mounting plate 5001 is firmly fixed on the first feed slide 2001, the headstock box 5002 is fixedly mounted on the headstock mounting plate 5001, forming a closed mounting space; the mandrel 5003 is arranged inside the headstock box 5002, the hydrostatic bearing 5004 is arranged inside the headstock box 5002 and is sleeved outside the mandrel 5003, and the mandrel 5003 is supported by a pressure oil film without contact; the torque motor 5005 is arranged inside the headstock box 5002, and its driving end 6005 is connected with the mandrel 5003 to provide power for the rotation of the mandrel 5003; the high-precision encoder 5006 is arranged inside the headstock box 5002 and is connected with the torque motor 5005, and is used for monitoring the operating parameters of the torque motor 5005 in real time; the clamping chuck 5007 is connected to the end of the mandrel 5003, and part of its structure is arranged inside the headstock box 5002, and its clamping end is arranged outside the headstock box 5002, and is used for directly clamping the workpiece. The hydrostatic bearing 5004 supports the mandrel 5003 through an oil film, greatly reducing the friction and wear of the mandrel 5003 when rotating, and ensuring the stability of the rotation of the mandrel 5003; the torque motor 5005 provides stable driving torque, and cooperates with the high-precision encoder 5006 to feedback the operating state in real time, so as to realize accurate control of the rotation speed of the mandrel 5003; the reasonable layout of the clamping chuck 5007 not only ensures the stable connection with the mandrel 5003, but also makes the clamping end exposed for the convenience of workpiece loading and unloading, and improves the accuracy and stability of the workpiece rotation as a whole, providing a basis for high-precision grinding.

[0074] In some embodiments of the present application, reference is made to the drawings attached hereto and to the accompanying descriptive text Figure 5 -attached Figure 8 , Figure 5 is a back view of a workpiece tailstock component provided in embodiments of the present application. Figure 6 is Figure 5 a sectional view of the N-N section. Figure 7 is Figure 5 a sectional view of the M-M section. Figure 8 is a longitudinal sectional view of a workpiece tailstock component provided in embodiments of the present application.

[0075] The workpiece tailstock component 6000 shown includes a handle mechanism 6001, a tailstock body 6002, a tailstock center 6003, and a center moving mechanism. The tailstock body 6002 is arranged on the second feed slide 3001, and an inner part of the tailstock body 6002 is provided with a matching cavity 6004. The center moving mechanism includes a matching part and a center assembly part, and the tailstock center 6003 is fixed on the center assembly part. The handle mechanism 6001 has a driving end 6005, and the driving end 6005 and the matching part of the center moving mechanism are arranged in the matching cavity 6004. The driving end 6005 of the handle mechanism 6001 can push the matching part of the center moving mechanism, so that the center assembly part drives the tailstock center 6003 to extend to the outside of the tailstock body 6002. The tailstock body 6002 provides a mounting carrier for various components, and the matching cavity 6004 provides a space for the movement of internal components. The tailstock center 6003 can be conveniently controlled to extend and retract by driving the center moving mechanism through the handle mechanism 6001. The tailstock center 6003 can reliably clamp the workpiece, and cooperates with the workpiece headstock component 5000 to realize axial positioning of the workpiece, prevents axial movement of the workpiece during machining, and ensures machining stability.

[0076] In some embodiments of the present application, the center moving mechanism of the workpiece tailstock component 6000 matches an oil cylinder mechanism.

[0077] The tailstock moving mechanism comprises a tailstock rod 6006, a tailstock sleeve 6007, a matching baffle 6008, a tailstock assembly 6009 and a reset spring 6010. The tailstock rod 6006 penetrates through the matching chamber 6004. The tailstock sleeve 6007 is sleeved outside the tailstock rod 6006. The matching baffle 6008 is located in the matching chamber 6004 and connected with the tailstock sleeve 6007. The tailstock assembly 6009 is assembled outside the tailstock body 6002. The tailstock assembly 6009 is internally provided with a tailstock channel 6011. The tailstock rod 6006 is partially arranged in the tailstock channel 6011. The tailstock channel 6011 is internally provided with a first step portion 6012. The tailstock sleeve 6007 is internally provided with a second step portion 6013. The reset spring 6010 is sleeved outside the tailstock rod 6006. The two ends of the reset spring 6010 are respectively abutted against the first step portion 6012 and the second step portion 6013. The oil cylinder mechanism comprises a piston rod 6014, a connecting block 6015 and a piston chamber 6016. The piston chamber 6016 is assembled outside the tailstock body 6002. The piston chamber 6016 is internally provided with an oil chamber 6017. The oil chamber 6017 is provided with a piston port, a first oil port 6018 and a second oil port 6019. The piston rod 6014 is partially arranged in the matching chamber 6004. One end of the piston rod 6014 penetrates into the oil chamber 6017 from the piston port. The end of the piston rod 6014 is provided with a piston baffle 6020. The piston baffle 6020 divides the oil chamber 6017 into a first chamber and a second chamber. The first oil port 6018 is in communication with the first chamber. The second oil port 6019 is in communication with the second chamber. The connecting block 6015 is located in the matching chamber 6004 and connected with the piston rod 6014 and the matching baffle 6008.

[0078] The oil cylinder mechanism drives the piston rod 6014 to move through the oil pressure. The movement is transmitted to the matching baffle 6008 through the connecting block 6015. The tailstock moving mechanism is driven to move. A more stable and uniform clamping force is provided. The clamping requirement of different workpieces is met.

[0079] The reset spring 6010 can automatically drive the tailstock rod 6006 to reset when the oil cylinder is depressurized. The tailstock 6003 is automatically retracted. The operation efficiency is improved. The step portions of the tailstock sleeve 6007 and the tailstock assembly 6009 provide stable support for the reset spring 6010. The reliability of the reset action is ensured. The precision and the automation degree of the action of the tailstock 6003 are improved.

[0080] In some embodiments of the present application, the workpiece tailstock component 6000 is placed inside the tailstock fine adjustment mechanism 6030 inside the tailstock body 6002, the tailstock fine adjustment mechanism 6030 is arranged inside the tailstock body 6002, which divides the tailstock body 6002 into a first part 6040 and a second part 6050, and forms an adjustment gap between the two parts; the handle mechanism 6001, the tailstock center 6003 and the center moving mechanism are all arranged on the first part 6040. The tailstock fine adjustment mechanism 6030 includes a rotating differential cylinder 6031, a centering screw 6032, a first threaded inner cone 6033, a second threaded inner cone 6034 and a tensioning sleeve 6035, the first threaded inner cone 6033 and the second threaded inner cone 6034 are connected by threads on the centering screw 6032, and the tensioning sleeve 6035 is sleeved outside the first threaded inner cone 6033 and the second threaded inner cone 6034; the outside of the tensioning sleeve 6035 simultaneously contacts the surfaces of the first part 6040 and the second part 6050 forming the adjustment gap, and the rotating differential cylinder 6031 is arranged on the end of the centering screw 6032 outside the tailstock body 6002; when the centering screw 6032 rotates, it can drive the first threaded inner cone 6033 and the second threaded inner cone 6034 to move towards each other or away from each other, causing the tensioning sleeve 6035 to expand or contract.

[0081] By rotating the differential cylinder 6031 to rotate the centering screw 6032, the relative position of the first threaded inner cone 6033 and the second threaded inner cone 6034 can be accurately controlled, and the tensioning sleeve 6035 can be expanded or contracted, thereby fine-tuning the relative position between the first part 6040 and the second part 6050 of the tailstock body 6002; this fine-tuning capability can accurately correct the concentricity of the tailstock center 6003 and the workpiece headstock component 5000, ensuring the accuracy of the workpiece axis and effectively improving the machining precision of the workpiece, especially suitable for high-precision grinding scenarios.

[0082] In some embodiments of the present application, the grinding wheel machining turret 4000 includes an external grinding mechanism 4002, an internal grinding mechanism 4003 and a turret body 4001, the turret body 4001 is arranged on the surface of the first feed slide 2001, the external grinding mechanism 4002 and the internal grinding mechanism 4003 are both mounted on the surface of the turret body 4001, and the turret body 4001 can rotate along its own axis direction on the surface of the first feed slide 2001. Its beneficial effects are that the rotation function of the turret body 4001 enables the external grinding mechanism 4002 and the internal grinding mechanism 4003 to be quickly switched to the working position according to the machining requirements, without the need to frequently replace the grinding wheel, greatly shortening the process conversion time; the integration of the external grinding mechanism 4002 and the internal grinding mechanism 4003 in the same turret enables the equipment to complete the external and internal grinding of the workpiece under the same clamping, reduces the number of workpiece clamping, reduces the clamping error, and improves the overall machining efficiency and precision.

[0083] In some embodiments of the present application, the first hydrostatic guide rail 2000 is arranged perpendicularly to the second hydrostatic guide rail 3000; the first hydrostatic guide rail 2000 is provided with a first driving motor 2003, and the movable end of the first driving motor 2003 is connected with the first feeding slide 2001; the second hydrostatic guide rail 3000 is provided with a second driving motor 3003, and the movable end of the second driving motor 3003 is connected with the second feeding slide 3001. The beneficial effects are that the perpendicular arrangement of the two hydrostatic guide rails makes the movement directions of the first feeding slide 2001 and the second feeding slide 3001 orthogonal to each other, forming a movement system of the Cartesian coordinate system type, which is convenient for adjusting the complex relative positions between the workpiece and the grinding wheel; the first driving motor 2003 and the second driving motor 3003 respectively provide power for the corresponding slides, can accurately control the moving speed and displacement of the slides, realize the accurate control of the feeding movement, and meet the requirements of the movement precision for high-precision grinding.

[0084] In some embodiments of the present application, the wear real-time compensation control system comprises a position monitoring mechanism and a control system, and the control system is connected with the position monitoring mechanism and the first driving motor 2003 respectively. The beneficial effects are that the position monitoring mechanism can monitor the deviation between the actual position and the theoretical position of the first feeding slide 2001 in real time, indirectly reflects the wear state of the guide rail; after receiving the monitoring data, the control system can issue control instructions to the first driving motor 2003 according to the preset algorithm, compensates the position error caused by the wear of the guide rail, ensures that the first feeding slide 2001 always maintains an accurate movement trajectory, effectively prolongs the service life of the guide rail, and maintains the stability of the long-term machining precision of the equipment.

[0085] In some embodiments of the present application, the first hydrostatic guide rail 2000 is provided with a first grating 2002, and the first grating 2002 is arranged on one side of the first hydrostatic guide rail 2000 along the length direction of the first hydrostatic guide rail 2000; the second hydrostatic guide rail 3000 is provided with a second grating 3002, and the second grating 3002 is arranged on one side of the second hydrostatic guide rail 3000 along the length direction of the second hydrostatic guide rail 3000. As a high-precision position detection element, the grating can detect the moving positions of the first feeding slide 2001 and the second feeding slide 3001 along the respective guide rails in real time and accurately, provides high-precision position feedback for the movement control of the slides; through the position information feedback of the grating, cooperating with the control of the driving motor, the closed-loop control of the slide movement can be realized, the positioning accuracy and the repeat positioning accuracy of the feeding movement are greatly improved, and reliable guarantee is provided for the high-precision grinding of the workpiece.

[0086] In some embodiments of the present application, the bed body 1000 is made of marble. The marble material can effectively reduce the influence of environmental temperature fluctuations on the size accuracy of the bed body 1000; at the same time, the marble has uniform texture and large density, has good shock resistance and stability, can absorb the vibration generated in the processing process, avoids the interference of the vibration on the installation accuracy and processing accuracy of each component; in addition, the marble surface is smooth and has good wear resistance, is not easy to deform after long-term use, provides stable and high-precision basic support for the entire equipment, and fundamentally guarantees the overall processing performance of the equipment.

[0087] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0088] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A machining grinding machine, characterized in that, include: Bed frame; The first hydrostatic guide rail is disposed on the surface of the bed, and the first feed slider is movably connected thereto. The second hydrostatic guide rail is disposed on the surface of the bed, and a second feed slider is movably connected thereto. A grinding wheel turret is mounted on the first feed slide and is used to process workpieces; The workpiece headstock component is mounted on the second feed slider and is used to clamp the workpiece and drive the workpiece to rotate. The workpiece tailstock component is disposed on the second feed slider and is disposed opposite to the workpiece tailstock component, and is used to press the workpiece against the workpiece headstock component.

2. The machining grinding machine according to claim 1, characterized in that, The workpiece headstock component includes: The headstock mounting plate is fixed on the first feed slider; The head frame housing is fixed to the head frame mounting plate; The mandrel is disposed inside the head frame housing; A hydrostatic bearing is disposed inside the headstock housing and sleeved on the outside of the spindle; A torque motor is disposed inside the head frame housing, and the drive end of the torque motor is connected to the spindle; A high-precision encoder is configured inside the head frame housing and connected to the torque motor; A clamping chuck is connected to the end of the mandrel and is partially disposed inside the headstock housing; the clamping end of the clamping chuck is disposed on the outside of the headstock housing.

3. The machining grinding machine according to claim 1, characterized in that, The workpiece tailstock component includes a handle mechanism, a tailstock body, a tailstock center, and a center moving mechanism. The tailstock body is mounted on the second feed slider, and a mating chamber is provided inside the tailstock body. The center moving mechanism includes a mating part and a center assembly part. The handle mechanism includes a drive end, which is disposed in the mating chamber. The mating part of the top moving mechanism is disposed in the mating cavity; The tailstock tip is fixed to the tip assembly, and the drive end of the handle mechanism can push the mating part of the tip moving mechanism so that the tip assembly drives the tailstock tip to extend to the outside of the tailstock body.

4. The machining grinding machine according to claim 3, characterized in that, The workpiece tailstock component also includes a hydraulic cylinder mechanism that cooperates with the center moving mechanism; The center moving mechanism includes: a center rod, a center sleeve, a mating baffle, a center rod assembly, and a return spring; The center rod passes through the mating chamber, the center sleeve is sleeved on the outside of the center rod, and the mating baffle is located in the mating chamber and connected to the center sleeve; The top rod assembly is fitted to the outside of the tailstock body, and the top rod assembly has a top rod channel inside, with the top rod portion disposed within the top rod channel; The top rod channel has a first stepped section inside, and the top sleeve has a second stepped section inside; the return spring is sleeved on the outside of the top rod, and the two ends of the return spring abut against the first stepped section and the second stepped section respectively. The hydraulic cylinder mechanism includes: a piston rod, a connecting block, and a piston chamber; the piston chamber is assembled on the outside of the tailstock body, and an oil chamber is provided inside the piston chamber, with a piston port, a first oil port, and a second oil port provided on the oil chamber; The piston rod is placed in the mating chamber, and one end of the piston rod passes through the piston port into the oil chamber. A piston baffle is provided at the end of the piston rod, which divides the oil chamber into a first chamber and a second chamber. The first oil port communicates with the first chamber, and the second oil port communicates with the second chamber. The connecting block is disposed in the mating chamber and is simultaneously connected to the piston rod and the mating baffle.

5. The machining grinding machine according to claim 4, characterized in that, The workpiece tailstock component also includes a tailstock fine-tuning mechanism disposed inside the tailstock body. The tailstock body is divided into a first part and a second part by the tailstock fine-tuning mechanism, and an adjustment gap is formed between the first part and the second part. The handle mechanism, the tailstock tip, and the tip moving mechanism are all disposed on the first part; The tailstock fine-tuning mechanism includes: a rotating differential cylinder, a self-aligning screw, a first threaded inner cone, a second threaded inner cone, and a tensioning kit; The first and second threaded inner cones are threadedly connected to the self-aligning screw, and the tensioning kit is sleeved on the outside of the first and second threaded inner cones; The outer side of the tensioning kit simultaneously contacts the surfaces of the first part and the second part that form the adjustment gap. The rotating micro-drum is disposed on the end of the self-aligning screw located outside the tailstock body. The rotation of the self-aligning screw can drive the first threaded inner cone and the second threaded inner cone to move towards each other and away from each other, so as to expand and contract the tensioning kit.

6. The machining grinding machine according to claim 1, characterized in that, The grinding turret includes an outer cylindrical grinding mechanism, an inner cylindrical grinding mechanism, and a turret body; the turret body is disposed on the surface of the first feed slider, the outer cylindrical grinding mechanism and the inner cylindrical grinding mechanism are both disposed on the surface of the turret body, and the turret body can rotate on the surface of the first feed slider along its own axial direction.

7. The machining grinding machine according to claim 1, characterized in that, The first hydrostatic guide rail is arranged perpendicular to the second hydrostatic guide rail; a first drive motor is provided on the first hydrostatic guide rail, and the movable end of the first drive motor is connected to the first feed slider. A second drive motor is provided on the second hydrostatic guide rail, and the movable end of the second drive motor is connected to the second feed slider.

8. The machining grinding machine according to claim 7, characterized in that, The first hydrostatic guide rail is equipped with a wear real-time compensation control system, which includes a position monitoring mechanism and a control system; the control system is connected to the position monitoring mechanism and the first drive motor.

9. The machining grinding machine according to claim 1, characterized in that, A first grating is provided on the first hydrostatic guide rail, and the first grating is disposed on one side of the first hydrostatic guide rail along the length direction of the first hydrostatic guide rail. A second grating is provided on the second hydrostatic guide rail, and the second grating is arranged on one side of the second hydrostatic guide rail along its length direction.

10. The machining grinding machine according to claim 1, characterized in that, The bed frame is made of marble.

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